Premium Loaded Cylinder Head Assembly
For Cummins ISB / ISBE / QSB 5.9L 24V Common Rail (2003–2007)
Product Excellence
Upgrade your engine’s reliability with this Ready-to-Bolt solution. Specifically engineered for the high-pressure demands of Common Rail (CR) diesel engines, this head is 100% brand new and fully assembled with premium internal components.
Loaded & Ready
Includes pre-installed intake/exhaust valves, heavy-duty springs, and retainers. Saves hours of machine shop labor.
Reinforced Casting
Cast from High-Strength Gray Iron. Features thicker cooling jackets to prevent common thermal cracking issues.
100% Tested
Every unit undergoes a multi-stage Pressure Test to guarantee 0% leaks in water and oil galleries.
Vehicle & Engine Fitment
- 2003-2007 Dodge Ram 2500
- 2003-2007 Dodge Ram 3500
- Cummins ISB / ISBE 5.9L CR
- Cummins QSB 5.9L Industrial
- CASE / JCB Equipment
- Marine & Power Generators
OEM Interchange Reference
5282703 | 3991773 | 5336956 | 4941495 | 4897480 | 4941496 | 3965999
*Part numbers are for reference only. Please verify fitment with your engine ESN.*
LTL Freight & 0% Damage Guarantee
This heavy-duty part (100+ lbs) is shipped via LTL Palletized Freight. It is secured on a custom pallet and encased in a Steel-Strapped Wooden Crate. This ensures your item arrives in perfect condition. Note: A valid phone number is required for delivery appointment.
